Environment Canada issues heat warning
WINNIPEG – The humidex in southern Manitoba will climb above 40 this afternoon, Environment Canada warns.
The humidex in southern Manitoba will climb above 40 this afternoon, Environment Canada warns.
A humidex higher than 40 can cause great discomfort and people should avoid exertion, Environment Canada says.
The humidex is a combined measure of humidity and temperature that reflects how hot the air feels, much the way windchill factors in wind to calculate how cold the air feels.“An extremely high humidex reading can be defined as one that is over 40. In such conditions, all unnecessary activity should be curtailed,” the Environment Canada website says.
“If working outdoors is an absolute necessity, drink plenty of liquids and take frequent rest breaks.”
Extremely high humidex readings are rare in Canada, except in the southern regions of Ontario, Manitoba and Quebec, Environment Canada says.